- Affiliate Professor, Global Health
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Dr. Smith’s lab studies the malaria parasite Plasmodium falciparum. The goal of the lab is to understand pathogenic disease mechanisms in severe malaria. We use this knowledge to design disease interventions. A major research focus in the laboratory is cytoadhesion of P. falciparum-infected erythrocytes to the endothelial lining of blood vessels and mechanisms that contribute to endothelial dysfunction. By sequestering in small blood vessels, infected erythrocytes avoid spleen dependent killing mechanisms, but excessive parasite sequestration in vital organs, such as brain and placenta, can damage function. We are interested in understanding the key receptor interactions that mediate parasite binding to different microvessel beds in the body and investigating how parasite and host factors interact to cause endothelial dysfunction. We are also studying the host cell signaling mechanisms in endothelial cells to better understand how highly inflammatory pathogens, such as malaria parasites, can lead to maladapted vascular environments. The goal is to guide and develop host-based therapeutic approaches that can treat endothelial dysfunction.
- PhD (Washington University)
- BA (Macalester College)
- Host-Pathogen Interactions
- Infectious Diseases
Avril M, Tripathi AK, Andisi C, Janes JH, Brazier J, Soma V, Sullivan DJ Jr, Bull PC, Stins MF, and Smith JD. A restricted subset of var genes is associated with adherence of Plasmodium falciparum infected erythrocytes to brain endothelial cells. Proc. Natl. Acad. Sci. USA 2012 109:E1782-90. PMCID: PMC3387091.
Bernabeu, M, Danziger SA, Avril M, Vaz M, Babar PH, Brazier AJ, Herricks T, Maki JN, Pereira L, Mascarenhas A, Gomes E, Chery L, Aitchison JD, Rathod PK, and Smith JD. Severe adult malaria is associated with specific PfEMP1 adhesion types and high parasite biomass. Proc. Natl. Acad. Sci. USA. 2016 113:E3270-9. PMCID:PMC4988613
Kessler A, Dankwa S, Bernabeu M, Harawa V, Danziger SA, Duffy F, Kampondeni SD, Potchen MJ, Dambrauskas N, Vigdorovich V, Oliver BG, Hochman SE, Mowrey WB, MacCormick IJC, Mandala WL, Rogerson SJ, Sather DN, Aitchison JD, Taylor TE, Seydel KB, Smith JD, and K Kim. Linking EPCR-binding PfEMP1 to brain swelling in pediatric cerebral malaria. Cell Host & Microbe. 2017 22:601-614. PMCID: PMC5783720
Bernabeu M, Gunnarsson C, Vishnyakova M, Howard CC, Nagao RJ, Avril M, Taylor TE, Seydel KB, Zheng Y, Smith JD. Binding heterogeneity of P. falciparum to 3D brain microvessels is mediated by EPCR and ICAM-1. mBio. 2019 May 28;10(3). pii: e00420-19. doi:10.1128/mBio.00420-19. PMID:31138740.
Duffy F, Bernabeu M, Babar P, Kessler A, Wang CW, Vaz M, Chery L, Mandala WL, Rogerson SJ, Taylor TE, Seydel KB, Lavstsen T, Gomes E, Kim K, Lusingu J, Rathod PK, Aitchison JD, Smith JD. Meta-analysis of Plasmodium falciparum var signatures contributing to severe malaria in African children and Indian adults. 2019 mBio. Apr 30; 10(2). pii. E00217-19. PMID: 31040236.